from django.core.cache import cache
from django.shortcuts import render

# Create your views here.
from django.http import JsonResponse
from django.views import View

from areas.models import Area


class ProvinceAreasView(View):
    def get(self, request):

        province_list = cache.get('province_list')
        if not province_list:
            try:
                province_model_list = Area.objects.filter(parent__isnull=True)
                province_list = []
                for province_model in province_model_list:
                    province_list.append({'id': province_model.id,
                                          'name': province_model.name})
            except Exception as e:
                return JsonResponse({
                    'code': 400,
                    'errmsg': '数据错误'
                })
        return JsonResponse({
            'code': 0,
            'errmsg': 'OK',
            'province_list': province_list
        })


class SubAreasView(View):
    def get(self, request, pk):

        try:
            sub_model_list = Area.objects.filter(parent=pk)
            parent_model = Area.objects.get(id=pk)
            sub_list = []
            for sub_model in sub_model_list:
                sub_list.append({'id': sub_model.id,
                                 'name': sub_model.name})
            sub_data = {
                'id': parent_model.id,
                'name': parent_model.name,
                'subs': sub_list
            }
        except Exception as e:
            return JsonResponse({
                'code': 400,
                'errmsg': '数据错误'
            })
        return JsonResponse({
            'code': 0,
            'errmsg': 'OK',
            'sub_data': sub_data
        })
